G44.0
Header — not billableCluster headaches and other trigeminal autonomic cephalgias (TAC)
The ICD-10 code for cluster headaches and other trigeminal autonomic cephalgias (tac) is G44.0.
G44.0 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 7 more specific codes below.
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •This is a non-billable header code. Documentation must support a more specific child code before this diagnosis can be reported on a claim.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Child codes under G44.0
- G44.00Cluster headache syndrome, unspecifiednon-billable header
- G44.01Episodic cluster headachenon-billable header
- G44.02Chronic cluster headachenon-billable header
- G44.03Episodic paroxysmal hemicranianon-billable header
- G44.04Chronic paroxysmal hemicranianon-billable header
- G44.05Short lasting unilateral neuralgiform headache with conjunctival injection and tearing (SUNCT)non-billable header
- G44.09Other trigeminal autonomic cephalgias (TAC)non-billable header
Related codes in this category
- G44.1Vascular headache, not elsewhere classified
- G44.2Tension-type headachenon-billable header
- G44.3Post-traumatic headachenon-billable header
- G44.4Drug-induced headache, not elsewhere classifiednon-billable header
- G44.5Complicated headache syndromesnon-billable header
- G44.8Other specified headache syndromesnon-billable header
- G44.0Cluster headaches and other trigeminal autonomic cephalgias (TAC)non-billable header